Products from Lithofin, Hydron and Allforstone for emoving dirt and stains from external natural stone. This includes removing residues from installation and marks from birds, berries, leaves, trees and green and "black spot" algae.
Take care not to use any acidic products on acid sensitive surfaces such as limestone, travertine and some cement base meterials etc.
Please call us for advice as we have a wealth of experience to draw upon.